pyvoy is a Python application server implemented in Envoy. It is based on Envoy dynamic modules, embedding a Python interpreter into a module that can be loaded by a stock Envoy binary.

Python servers have generally lagged behind on support for modern HTTP. pyvoy utilizies the battle-hardened Envoy to bring you all features of HTTP/2 and 3, with great performance and stability.

Features

• ASGI and WSGI applications with worker threads
• A complete, battle-tested HTTP stack - it's just Envoy
• Any Envoy configuration features can be integrated as normal
• Auto-restart on file change and IDE debugging for development

Limitations

• Platforms limited to those supported by Envoy, which generally means glibc-based Linux on amd64/arm64 or MacOS on arm64
• Multiple worker processes. It is recommended to scale up with a higher-level orchestrator instead and use a health endpoint wired to RSS for automatic restarts if needed
• Certain non-compliant requests like non-ascii query strings are prevented by Envoy itself

Quickstart

pyvoy is available on PyPI so can be installed using your favorite package manager.

uv add pyvoy

pip install pyvoy

This will also include the Envoy binary itself - there are no other steps to get running.